22742273 has 2 divisors, whose sum is σ = 22742274. Its totient is φ = 22742272.

The previous prime is 22742197. The next prime is 22742303. The reversal of 22742273 is 37224722.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21224449 + 1517824 = 4607^2 + 1232^2 .

It is a cyclic number.

It is not a de Polignac number, because 22742273 - 2²⁰ = 21693697 is a prime.

It is not a weakly prime, because it can be changed into another prime (22748273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11371136 + 11371137.

It is an arithmetic number, because the mean of its divisors is an integer number (11371137).

Almost surely, 2^22742273 is an apocalyptic number.

It is an amenable number.

22742273 is a deficient number, since it is larger than the sum of its proper divisors (1).

22742273 is an equidigital number, since it uses as much as digits as its factorization.

22742273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9408, while the sum is 29.

The square root of 22742273 is about 4768.8859286001. The cubic root of 22742273 is about 283.3204716961.

Adding to 22742273 its reverse (37224722), we get a palindrome (59966995).

The spelling of 22742273 in words is "twenty-two million, seven hundred forty-two thousand, two hundred seventy-three".